Fine Swiss gold watch with perpetual calendar Circa 1900

Gold perpetual calendar lever watch by Perrenoud
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A fine Swiss 18 carat gold open faced perpetual calendar keyless lever pocket watch, circa 1900. Gilt finished lever movement, bimetallic compensation balance. Gold cuvette. White enamel dial with Roman numerals, blued steel spade hands, four subsidiary dials for month combined with leap year indicator, day, date and constant seconds. Monogrammed case, date correcting button in the band, hinged back. Case numbered, cuvette signed and numbered.
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Diameter: 51 mm
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Signed: Perrenoud & Cie Locle